CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.

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Main Port, China

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Our service formula: good quality+ good price+ good service=customer's trust

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Covering more than 160 countries in the world

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Q:4E DG 164 is a steel grade 3 steel, DG steel, E is what mean

E is the mark of the steel band seismic! Commonly known as: with E steel, or earthquake resistant steel!

Q:Do l 8, three grade steel have discs?

Yes, but because of the higher grade of the three screw thread, they are straight bars. It's not necessary to use grade three for 8 mm.

Q:The difference between rebar and crescent

From the shape of the rebar, the longitudinal rib and the cross rib intersect to form a thread; the crescent shaped steel bar looks from the shape, the longitudinal rib and the transverse rib do not intersect.

Q:How much is the minus difference per ton of thread steel?

In use, some mechanical strength, bending deformation property and welding performance are required. The raw steel billet for the production of threaded steel is carbon structural steel or low alloy structural steel which is treated by calm melting, and the finished steel bar is delivered in hot rolling forming, normalizing or hot rolling state. The grade of thread steel is composed of the minimum value of the yield point of HRB and brand.

Q:How is thread steel made?

Steel is produced by a small rolling mill, rolling mill main types are divided into: continuous and semi continuous and open train. New and used in the world, mostly continuous small rolling mill. Popular steel mills have universal high-speed rolling mills and 4 slitting high yield mills.

Q:What is the relationship between steel structure and thread steel?

Steel and thread steel are two entirely different concepts. A steel structure is a structural form of a structure, and the thread steel is the name of a material.

Q:Are steel bars used more in high-rise buildings or steel?

The shear wall structure is used in many round bars, such as vertical wall bars, horizontal bars, steel bars and stirrups. Note that only general structures are concerned.

Q:How many roots per ton of 18 thread steel?

If it is 9 meters per point, the weight of one is 18kg, and there are 55.5 in one tonIf it is 12 meters per point, a weight of 24kg, a ton there are 41.6.

Q:How many kinds of steel are needed to build the building?

According to the processing methods can be divided into: hot rolled steel, heat treatment, cold drawn steel, steel cold drawn low carbon steel wire and steel wire tube; surface shape can be divided into smooth steel and thread; according to the varieties of steel can be divided into low carbon steel, medium carbon steel, high carbon steel and alloy steel etc.. The strength of China's steel bars can be divided into five grades: I, II, III, IV and V.

Longitudinal tie rod. Longitudinal seam usually has longitudinal contraction joint and longitudinal construction joint two kinds, two kinds of longitudinal joints should be provided with tie rod. The bar shall be designed with the length of the threaded steel to ensure the bond between it and the concrete, and the diameter and spacing of the tie rod shall also be guaranteed. Thus, the tie rod can not provide enough tensile force, and when the concrete faceplate is contracted, the longitudinal joint is pulled apart to form a crack.